81713639 is an odd 8-digits composite number following 81713638
and preceding 81713640 . In scientific notation, it is written as 8.1713639 × 10^7.
The sum of its digits is 38. It has a total of 3 prime factors and 8 positive divisors.
There are 69826680 positive integers (up to 81713639) that are relatively prime to 81713639.
81713639 has 8 divisors, whose sum is 93671808
The reverse of 81713639 is 93631718
Previous prime number is 331
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2
Name
eighty-one million seven hundred thirteen thousand six hundred thirty-nine
Scientific notation
8.1713639 × 10^7
Engineering notation
8.1713639 × 10^6
Prime Factorization
7 × 331 × 35267
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81713639
Product of the distinct prime numbers
The prime factorization of 81713639 is 7 × 331 × 35267.
Since it has a total of 3 prime factors.
3 , 2 , 85 , 24 , 996 , 944 , 4230 , 2332 , 45686 , 33355 , 936091 , 42047 , 9011785 , 3311543 , 38189692 , 23365308 , 525350807 , 366608171 , 822293363 , 9452065740
n×2
163427278
n×3
245140917
n×4
326854556
n×5
408568195
n÷2
40856819.5
n÷3
27237879.666667
n÷3
20428409.75
n÷5
16342727.8
n2
6677118798622321
n3
5.4561167507074E+23
n4
4.4583915450916E+31
n5
3.6431139723626E+39
2 √n
9039.5596684794
3 √n
433.94183106231
4 √n
95.076598953052
5 √n
38.234807704746
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81713638
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81713639 can be divided by 8 positive divisors.
The sum of these divisors (counting 81713639) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110111101101100111100111
3
Ternary
12200202111001002
4
Quaternary
10313231213213
5
Quinary
131404314024
6
Senary
12035223515
8
Octal
467554747
10
Decimal
81713639
12
Duodecimal
23447b9b
16
Hexadecimal
4ded9e7
20
Vigesimal
15ae41j
36
Base36
1cnenb
md5
3a7e071c8889676e51295c4e3928505a
sha1
185fdb01b3f27c91b2eb7cf629549e49e1644e81
sha256
2a2402608b984f69c15f5683436c5199dbade231874d0daa8f060a1f90889a21
sha512
086efb8e68a5297e19db743b17fbedb2d1fe5543e1868ddae700f66229521ef9d4f8e676a2b7d294373633b323e485203a97ef0960e191a4b6a7ede6c71767c5
ripemd-160
2afc4e03228667b5bdad495536bbf2ecb9abca33
Diameter
163427278
Circumference
513421935.96098
Area
2.0976787364898E+16
Volume
2.2854528401534E+24
Surface area
8.3907149459593E+16
Circumference
513421935.96098
Perimeter
326854556
Area
6677118798622321
Diagonal
115560536.50466
Surface area
40062712791733926
Volume
5.4561167507074E+23
Space diagonal
141532174.41934
Perimeter
245140917
Area
2.8912772518468E+15
Altitude
70766087.209671
Surface area
2.8912772518468E+15
Volume
6.4300952556178E+22
Height
38520178.834886